xtremerat | 9da67fe3080edb611ebc54a556b3edf0c86b1c06628cc5825a5b9c6da8ba6143

General

Target

aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe
Size

19KB
MD5

aa5cc1b47c05ff2a12f9fd1e312bc7e8
SHA1

0ac75d7c1db16780ea53a865f48d8d85cda88f69
SHA256

9da67fe3080edb611ebc54a556b3edf0c86b1c06628cc5825a5b9c6da8ba6143
SHA512

38eab84bb6c39ea005f3dc1b11e82e59a2d48a4c8f925b48173826a1d9327a791879a5b9800d662746fb6d3b2892032b525c5f2d00b0b5269e5434bc1b7df9d7
SSDEEP

384:ZHKZfuH87GowDqGoMwevqxP6k6jDwPVBSmZ4xUN4KR:8ZfuHUvwDKP6kztZTH

Score

10^/10

xtremerat discovery persistence rat spyware upx

Malware Config

Signatures

Detect XtremeRAT payload 3 IoCs

resource	yara_rule
behavioral1/memory/2788-6-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral1/memory/1364-7-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat
behavioral1/memory/2788-9-0x0000000000C80000-0x0000000000C95000-memory.dmp	family_xtremerat

XtremeRAT
The XtremeRAT was developed by xtremecoder and has been available since at least 2010, and written in Delphi.
persistence spyware rat xtremerat

Boot or Logon Autostart Execution: Active Setup 2 TTPs 2 IoCs

Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

persistence

Active Setup

T1547.014

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Active Setup\Installed Components\{5460C4DF-B266-909E-CB58-E32B79832EB2}\StubPath = "C:\\Windows\\InstallDir\\Server.exe restart"	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe

UPX packed file 4 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1364-0-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/2788-6-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/1364-7-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx
behavioral1/memory/2788-9-0x0000000000C80000-0x0000000000C95000-memory.dmp	upx

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\HKLM = "C:\\Windows\\InstallDir\\Server.exe"	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\HKCU = "C:\\Windows\\InstallDir\\Server.exe"	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\InstallDir\Server.exe	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe
File created	C:\Windows\InstallDir\Server.exe	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	calc.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\SOFTWARE\FakeMessage	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\SOFTWARE\FakeMessage\FakeMessage = "OK"	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2788	calc.exe

Suspicious use of WriteProcessMemory 5 IoCs

description	pid	Process	procid_target
PID 1364 wrote to memory of 2788	1364	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe	30
PID 1364 wrote to memory of 2788	1364	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe	30
PID 1364 wrote to memory of 2788	1364	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe	30
PID 1364 wrote to memory of 2788	1364	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe	30
PID 1364 wrote to memory of 2788	1364	aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe	30

C:\Users\Admin\AppData\Local\Temp\aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\aa5cc1b47c05ff2a12f9fd1e312bc7e8_JaffaCakes118.exe"
1⤵
- Boot or Logon Autostart Execution: Active Setup
- Adds Run key to start application
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1364
- C:\Windows\SysWOW64\calc.exe
  calc.exe
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  PID:2788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Active Setup

1

T1547.014

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1364-0-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/1364-7-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2788-4-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2788-6-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download
memory/2788-9-0x0000000000C80000-0x0000000000C95000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads